/* .firstbar */
.firstbar{
    width: 1520px;
    height: 60px;
    border-bottom: 1px solid #dadce0;
    display: flex;
    line-height: 60px;
}
.firstbar>div:nth-child(1)>img{
    margin-left: 190px;
}
/*  .firstbar>span{
    color: #afbac1;
    position: absolute;
    left: 500px;
    top: 5px;
    z-index: 3;
}  */
input{
    width: 400px;
    height: 40px;
    margin-left: 200px;
    outline: none;
    border: 1px #e4eaec solid;
    background-color: #f3f7f9;
    box-sizing: border-box;
    padding-left: 15px;
}
/* 设置输入框后面的文字 */
input::-webkit-input-placeholder{
    color: #afbac1;
}
.firstbar>div:nth-child(3){
    width: 61.5px;
    height: 40px;
    background-color: #00aee4;
    text-align: center;
    line-height: 40px;
    margin-top: 12px;
    box-sizing: border-box;
    padding-top: 5px;
}
.firstbar>div:nth-child(3)>img{
    width: 20px;
}
/* menu */
.menu{
    width: 1520px;
    height: 56px;
    border-bottom: 1px solid #dadce0;
    position: sticky;
    top: 0px;
    z-index: 100;
    background-color: white;
}
.menu>ul{
    display: flex;
    position: relative;
    margin-left: 160px;
    height: 56px;
    line-height: 56px;
}
.menu>ul>li{
    width: 120px;
    text-align: center;
    position: relative;
}
.menu>ul>li>span{
    margin-left: 8px;
}
/* li下面的蓝色条 */
.menu>ul>li:nth-child(1)::after{
    content: "";
    display: block;
    width: 100%;
    height: 3px;
    background-color: #00aee4;
}
.menu>ul>li::after{
    content: "";
    display: block;
    margin-top: -2px;
    width: 0%;
    height: 3px;
    background-color: #00aee4;
    transition: all 0.8s;
}
.menu>ul>li:hover::after{
    width: 100%;
}
/* 下拉框0 */
.dropdown-content,.dropdown-content1{
    position: absolute;
    width: 0px;
    height: 0px;
    background-color: #ffffff;
    margin-top: 2px;
    box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s;
    z-index: 10;
}
.dropdown-content>ul>li,.dropdown-content1>ul>li{
    text-align: left;
    box-sizing: border-box;
    padding-left: 30px;
    height: 40px;
    width: 150px;
    line-height: 40px;
    overflow: hidden;
    position: relative;
}
.dropdown:hover .dropdown-content{
    width: 150px;
    height: 80px;
} 
.dropdown-content>ul,.dropdown-content1>ul{
    width: 0px;
    height: 0px;
    overflow: hidden;
    font-size: 0px;
    transition: all 0.3s;
} 
.dropdown:hover .dropdown-content>ul{
    width: 150px;
    height: 80px;
    font-size: 12px;
} 
.dropdown-content>ul>li>a,.dropdown-content1>ul>li>a{
    position: absolute;
    z-index: 2;
    transition: all 0.8s;
}
.dropdown-content>ul>li::before,.dropdown-content1>ul>li::before{
    content: "";
    display: block;
    width: 0px;
    height: 0px;
    border-radius: 50%;
    background-color: #00aee4;
    position: absolute;
    bottom: -40px;
    left: -60px;
    transition: all 0.8s;
}
.dropdown-content>ul>li:hover::before,.dropdown-content1>ul>li:hover::before{
    width: 250px;
    height: 90px;
}
.dropdown-content>ul>li:hover>a,.dropdown-content1>ul>li:hover>a{
    color: white;
}

.dropdown:hover .dropdown-content1{
    width: 150px;
    height: 160px;
} 
.dropdown:hover .dropdown-content1>ul{
    width: 150px;
    height: 160px;
    font-size: 12px;
} 

/* slideshow */
.slideshow{
    width: 1520px;
    height: 428px;
    overflow: hidden;
    position: relative;
    margin-top: 0.2px;
}
.container{
    display: flex;
    width: 3040px;
    height: 428px;
    position: relative;
    left: 0px;
    animation: slideshow 5s 1s steps(2,end) infinite;
}
.container>img{
    width: 1520px;
}
.circle{
    display: flex;
    width: 24px;
    height: 10px;
    position: absolute;
    z-index: 2;
    left: 740px;
    bottom: 15px;
}
.circle::before,.circle::after{
    content: "";
    display: block;
    width: 10px;
    height: 10px;
    background-color: #776348;
    opacity: 0.3;
    border-radius: 50%;
}
.circle::after{
    margin-left: 4px;
}
.slideshow::after{
    content: "";
    display: block;
    width: 10px;
    height: 10px;
    background-color: black;
    opacity: 0.7;
    border-radius: 50%;
    position: absolute;
    bottom: 15px;
    left: 740px;
    animation: move 5s 1s steps(2,end) infinite;
}
@keyframes slideshow{
    from{
        left: 0px;
    }
    to{
        left: -3040px;
    }
}
@keyframes move{
    from{
        left: 740px;
    }
    to{
        left: 768px;
    }
}
/* 箭头arrow */
.arrow-shadow{
    height: 428px;
    width: 1520px;
    position: absolute;
    z-index: 5;
}
.arrow-shadow::before,.arrow-shadow::after{
    content: "";
    display: block;
    height: 428px;
    width: 230px;
    opacity: 0;
}
.arrow-shadow::before{
    background-image: linear-gradient(to right,black,white);
    position: absolute;
    left: 0px;
}
.arrow-shadow::after{
    background-image: linear-gradient(to left,black,white);
    position: absolute;
    left: 1290px;
}
.slideshow>a>.iconfont{
    color: white;
    display: inline-block;
    transform: scale(2,2);
    position: absolute;
    z-index: 6;
    opacity: 0;
}
.slideshow>a>.icon-jiantou1{
    left: 120px;
    top: 200px;
}
.slideshow>a>.icon-jiantou{
    left: 1380px;
    top: 200px;
}
.slideshow:hover>a>.iconfont,.slideshow:hover .arrow-shadow::before,.slideshow:hover .arrow-shadow::after{
    opacity: 0.4;
}
/* 优势 */
.advantage{
    width: 1520px;
    height: 400px;
    box-sizing: border-box;
    padding: 70px 0px;
    /* position: absolute;
    top: 548px; */
}
.advantage>h1,.advantage>h2{
    text-align: center;
}
.advantage>h1{
    font-size: 30px;
    margin-bottom: 10px;
}
.advantage>h2{
    font-size: 14px;
}
/* advantage-pic */
.advantage-pic{
    width: 900px;
    height: 195px;
    margin: auto;
    display: flex;
    justify-content: space-between;
}
.advantage-pic>a{
    width: 128px;
    display: inline-block;
    text-align: center;
}
.advantage-pic>a>img{
    margin-bottom: 30px;
}
.advantage-pic>a:hover{
    color: #00aee4;
}
/* 产品介绍 */
.product-introduce{
    width: 1520px;
    height: 850px;
    background-color: #f2f2f2;
    box-sizing: border-box;
    padding-top: 70px;
}
.product-introduce>h2{
    text-align: center;
    font-size: 30px;
    font-weight: 700;
}
.product-introduce>h2::after{
    content: "";
    display: block;
    width: 55px;
    height: 1px;
    background-color: #00aee4;
    margin: auto;
    margin-top: 10px;
}
.product-introduce>ul{
    box-sizing: border-box;
    padding-left: 500px;
    margin-top: 40px;
    display: flex;
    width: 1520px;
    text-align: center;
}
.product-introduce>ul>li:nth-child(1)>a{
    color: #00aee4;
    text-decoration: line-through;
}
.product-introduce>ul>li>a{
    margin-right: 30px;
}
.product-introduce>ul>li>a:hover{
    color: #00aee4;
    text-decoration: line-through;
}
/* 产品图片 */
.product-pic{
    width: 1170px;
    height: 555px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(3,355px);
    grid-template-rows: 462px;
    justify-content: space-around;
    margin-top: 40px;
}
.product-top{
    position: relative;
    width: 355px;
    height: 355px;
}
.product-top>img{
    width: 355px;
}
.product-top::before,.product-top::after{
    content: "";
    display: block;
    position: absolute;
    width: 100%;
    height: 0%;
    background-color: #00aee3;
    transition: all 0.6s;
}
.product-top::before{
    top: 0px;
}
.product-top::after{
    bottom: 0px;
}
.learn-more{
    position: absolute;
    z-index: 5;
    top: 160px;
    left: 70px;
    width: 210px;
    height: 50px;
    background-color: white;
    border-radius: 90px;
    text-align: center;
    line-height: 50px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.6);
    animation: size 0.8s linear;
    display: none;
    overflow: hidden;
}
@keyframes size{
    from{
        transform: scale(0.8);
    }
    25%{
        transform: scale(1.2);
    }
    50%{
        transform: scale(0.9);
    }
    75%{
        transform: scale(1.1);
    }
    to{
        transform: scale(1);
    }
}
.learn-more::before{
    content: "";
    display: block;
    width: 230px;
    height: 0px;
    background-color: #00aee4;
    position: absolute;
    z-index: -2;
    transition: all 0.5s;
}
.learn-more>a{
    color: #00aee4;
}
.product:hover .learn-more{
    display: block;
}
.product:hover .product-top::before,.product:hover .product-top::after{
    height: 50%;
}
.learn-more:hover>a{
    color: white;
}
.learn-more:hover::before{
    height: 50px;
}
/* product-bottom */
.product-bottom{
    margin-top: 15px;
    box-sizing: border-box;
    position: relative;
    height: 75px;
}
.product-bottom>h3{
    font-size: 18px;
    font-weight: bold;
    margin-top: 25px;
    margin-left: 20px;
}
.product-bottom>p{
    font-size: 14px;
    margin-top: 10px;
    margin-left: 20px;
}
.product-bottom::before,.product-bottom::after{
    content: "";
    display: block;
    height: 0px;
    width: 10px;
    background-color: #00aee4;
    position: absolute;
    transition: all 0.8s;
}
.product-bottom::before{
    bottom: 0px;
}
.product-bottom::after{
    bottom: 0px;
    right: 0px;
    height: 90px;
}
.product-bottom>h3>a:hover{
    color: #00aee4;
}
.product:hover .product-bottom::before{
    height: 90px;
}
/* button */
.button{
    width: 170px;
    margin: auto;
    margin-top: -30px;
}
.button>a{
    color: #00aee4;
    display: inline-block;
    text-align: center;
    line-height: 30px;
    width: 30px;
    height: 30px;
    background-color: white;
    margin-right: 30px;
    border-radius: 50%;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s;
}
.button>a:hover{
    color: white;
    background-color: #00aee4;
}
/* 关于我们 */
.about-us{
    width: 1520px;
    height: 554px;
    padding-top: 70px;
    box-sizing: border-box;
    border-bottom: 2PX #f5f5f5 solid;
}
.about-us>h1{
    text-align: center;
    font-size: 30px;
    font-weight: 200;
}
.about-us>h1::after{
    content: "";
    display: block;
    width: 20px;
    height: 2px;
    background-color: #222222;
    margin: auto;
    margin-top: 10px;
}
.about-us>h3{
    text-align: center;
    margin-top: 15px;
}
.article{
    width: 1170px;
    height: 250px;
    margin: auto;
    background-color: #f0f0f0;
    padding: 10px 0px;
    box-sizing: border-box;
    margin-top: 30px;
    display: grid;
    grid-template-columns: 767px 357px;
    grid-template-rows: 229px;
    justify-content: space-evenly;
}
.article-writing>h2{
    font-weight: bold;
    margin: 25px 0px 15px;
    font-size: 14px;
}
.article-writing>p{
    font-size: 13px;
    line-height: 26px;
}
.article-writing>a{
    display: inline-block;
    width: 108px;
    height: 35px;
    border: 1px solid;
    border-radius: 8px;
    text-align: center;
    line-height: 35px;
    margin-top: 20px;
    transition: all 0.2s;
}
.article-writing>a>span{
    margin-left: 10px;
}
.article-writing>a:hover{
    color: white;
    background-color: #00aee4;
}
.article-pic>img{
    width: 357px;
}
/* 热点新闻 */
.hot-news{
    width: 1520px;
    height: 620px;
    box-sizing: border-box;
    padding-top: 70px;
    margin-top: 25px;
    margin: auto;
}
.hot-news>h1{
    font-size: 30px;
    font-weight: 200;
    text-align: center;
}
.hot-news>div:nth-of-type(1)>a:nth-child(1){
    display: inline-block;
    width: 40px;
    height: 14px;
    border: 1px solid;
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
    text-align: center;
    line-height: 14px;
    transition: all 0.2s;
}
.hot-news>div:nth-of-type(1)>a:nth-child(2){
    display: inline-block;
    width: 40px;
    height: 14px;
    border: 1px solid;
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    text-align: center;
    line-height: 14px;
    margin-left: -6px;
    transition: all 0.2s;
}
.hot-news>div:nth-of-type(1){
    text-align: right;
    width: 1170px;
    margin: auto;
    margin-top: 10px;
    box-sizing: border-box;
    padding-right: 12px;
}
.hot-news>div:nth-of-type(1)>a:hover{
    background-color: #00aee4;
    color: white;
}
.news-container{
    width: 1170px;
    height: 397px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(4,276px);
    grid-template-rows: 397px;
    justify-content: space-evenly;
    margin-top: 18px;
    transition: all 0.5s linear;
}
.news>img{
    width: 276px;
}
.news>p{
    width: 240px;
    margin: auto;
}
.news>p:nth-of-type(1){
    font-size: 14px;
    margin-top: 22px;
}
.news>p:nth-of-type(2){
    font-size: 12px;
    margin-top: 15px;
}
.news>p:nth-of-type(3){
    font-size: 15px;
    margin-top: 18px;
}
.news>p>img{
    width: 15px;
    margin: 0px 15px;
}
.news-container>a:hover{
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    transform: translateY(-3px);
}
/* 底部导航 */
.bottom-nav{
    height: 50px;
    line-height: 50px;
    width: 1520px;
    background-color: #00aee4;
    display: flex;
    box-sizing: border-box;
    padding-left: 150px;
}
.bottom-nav>ul{
    display: flex;
}
.bottom-nav>ul>li>a{
    display: block;
    width: 120px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    color: white;
}
.bottom-nav>ul>li:hover a{
    color: black;
}
.bottom-nav>.nav-pic{
    height: 30px;
    margin: auto 0;
    margin-left: 130px;
    position: relative;
}
.bottom-nav>.nav-pic img{
    width: 30px;
    height: 30px;
    margin: 0 10px;
}
.bottom-nav>span{
    color: white;
}
.bottom-nav .nav-pic>a:nth-child(2)::before{
    content: "";
    background-image: url(../images/planar.png);
    display: block;
    background-size: 100%;
    width: 120px;
    height: 120px;
    position: absolute;
    top: -120px;
    left: 10px;  
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    background-repeat: no-repeat;
    opacity: 0;
    transition: all .2s linear;
    z-index: 10;
}
.bottom-nav .nav-pic>a:nth-child(2):hover::before{
    opacity: 1;
}
/* 页面脚部 */
footer{
    padding: 20px 0;
    height: 155px;
    box-sizing: border-box;
    text-align: center;
    line-height: 25px;
    font-size: 14px;
}
footer>p:last-child a{
    color: #00aee4;
    font-weight: bold;
}
.return{
    width: 1520px;
    text-align: right;
    position: sticky;
    top: 650px;
}